I am running a MSD digital 7 plus 7530T and a shark SX@ dual stage fogger. I was wondering if anyone had suggestions for a good nitrous controller and even better if there is anyway to set up to spray in second and the second shot in third. Any help would be great.

 

I liked my Jacobs NMM, it's a bit of a hassle and a bit dated looking, but it's truly progressive to engine rpm, so you get almost a natural power curve. Helps to keep from breaking parts and allows you to run a much bigger shot without seeing crazy cylinder pressures. If you have it set to come in relatively gently you won't even feel a "hit" (no one watching you will either, with smaller jets I finally wired an indicator light to the N2O solenoid so I knew when it was opening for testing reasons...) but you can tune it to run just as fast with or without.

The other thing I liked doing with it is putting the biggest jets in the system I could ever imagine using, and then setting the "full on" rpm way outside the range that I was ever going to run the car to, so you were getting only a percentage of the total shot, and if you wanted more you just turned down the maximum rpm, the closer you got to your cut out rpm the larger percentage of the full hit you'd get (I usually ran 225 or 250hp jets and rarely ran more than about the equivalent of a 150 or 175 shot).

If you're going to do some dyno tuning there is also an adjustment for proportional progressive ratios between the N2O and fuel solenoid, so you can adjust if one solenoid/jet or the other responds better or if you want to run a richer ratio as you run more N2O through the engine.

 

Nice and thank you. Is there anything that would allow it to know when I shift from second to third to bring on the second shot? Or is that a seperate unit? I was looking at the NX unit and it appears they do have something similar to that.

 

http://www.holley.com/15977NOS.asp this one looks pretty bad to the A@@. Of course I am also eye balling the microedge +.